Upload
berenice-may
View
214
Download
0
Tags:
Embed Size (px)
Citation preview
11
Capacity Planning Methodologies / Reporting for Capacity Planning Methodologies / Reporting for Storage Space and SAN Port UsageStorage Space and SAN Port Usage
Bob DavisBob DavisEMC Technical ConsultantEMC Technical Consultant
33
Agenda Agenda
Truly understand all theTruly understand all the requirementsequirements
Performance viewPerformance view
Planning for the growth - new toolsPlanning for the growth - new tools
Do you need to be “IT Green” (save power)Do you need to be “IT Green” (save power)
44
Storage and SAN Growth
Understand your growth requirements– GBs– Load (MB)– New application type (VmWare, DB, DW, etc.) – Is everything really OK today
Planning and Provisioning - Trend Design Plan Meet service-level agreements
Monitoring and Reporting Monitor storage to improve asset usage
Device Management Configure and optimize storage
Planning and Provisioning
Monitoring and Reporting
Device Management
55
Storage Capacity Management Guidelines:
– Definition of reserve capacity
– Expected utilization criteria
– Acquisition thresholds – Hardware Technical and Performance Requirements Guide
66
Basic Enterprise Storage Assessment Reporting recommendations: Top systems by total space in use
Top volumes by percentage used
Top 10 most accessed systems
Top 10 most modified systems
Top 10 systems with new storage creation
Bottom 10 most accessed systems
Bottom 10 most modified systems
Bottom 10 systems with new storage creation
Top 10 systems with large duplicate files
Advanced Enterprise Storage Assessment Report recommendations: Database-space usage
Database-table usage
Database-usage detail
Quick View report on file types
Files not backed up
Mail-server message and attachment summary
Mail-server storage summary
Paths trend
Space usage by file type
Storage-activity trend
77
Continue to Analyze
Identify potential primary storage-capacity issues
Understand what applications and files are most affecting your environment
Validate and track the power of your archive strategy
99
Storage and SAN Growth
Differentiators:– Cost– Performance– Energy Efficiency– Recoverability
• Local• Remote
Security
Encryption
VmWare
Technical Options:– RAID Type– Drive Type– Replication
– Port Speed
Best Practice:Use different
physical drives for different
tiers
1010
Before you start - Analyze Performance and Health
Performance monitoring – Graphical/tabular performance
views and thresholds– Historical-trend analysis
(available through Performance Manager)
– Data can be exported to .csv file
Consolidated Alerts View for all devices
– Policy-based– Alerts for performance, errors,
availability, health
Display device health for all elements
– HBAs, switches, storage arrays
1414
Understand the End-to-End Topology
– Servers – HBAs– SAN devices– Ports / Speed – Storage arrays – Data Layout (why
it is this way)– Application
1515
Configuring Too Few Components Causes Growth Problems
Oops!
Front-End
(Hosts)
Cache & Matrix
Back-End (DAs)
Disks
1717
Celerra NSSymmetrix DMX-4
Symmetrix Priority
Controls
Virtual LUN Technology
Dynamic Cache
Partitioning
CLARiiON CX3
Navi QoSManager
Virtual LUNTechnology
Virtual Provisioning
Symmetrix Optimizer
Virtual Provisioning
(Mid 2008)
Automated Volume
Management
Celerra Virtual
Provisioning
Celerra FileMover
Software Based Tiering Capabilities
Fibre Channel and SATA Intermix
1818
Need to be Green? (i.e. do I have power and PDU space)
94%less energy
87%less energy
73%less energy
50%less energy
32%less energy
73 GB15K FC
146 GB 15K FC
300 GB 10K FC
500 GB 7.2K FC
787 kWh/yrPer TB
1,434 kWh/yrPer TB
3,048 kWh/yrPer TB
6,096 kWh/yrPer TB
1 TB7.2K SATA
393 kWh/yrper TB
73 GBFlash Drive
4127kWh/yrper TB
Performance Capacity
Power/TB
30xIO/s jump
Power / GB – Energy To Store 1TB of Information*
* Including data center & array infrastructure
1919
Summary - Storage
Basic rules for growth– Configure enough resources– Utilize resources evenly– Simple data layouts are better
Best practices for Tiering– Different tiers should use different physical disks, share DAs– Tiered systems should use Dynamic Cache Partitioning (DCP)
Selecting the right drive and protection type– What to place on Flash Drives
New Features that affect growth– Working with Virtual Provisioning– New prefetch for Open Systems
2020
Summary - SAN
Design for 70% of measured maximum I/O per second or MB/sec per storage port:
The number of I/Os is finite, even at a 100% read hit – 4 KB I/Os: 1883 IO/sec, 7.5 MB/sec – 8 KB I/Os: 1626 IO/sec, 13.0 MB/sec – 32 KB I/Os: 1428 IO/sec, 45.6 MB/sec – Overloading the ports results in response time degradation
Determining the ISL– Routing – Trunking – Bandwidth utilization (<50 percent of its actual bandwidth potential) – Redundancy requirements
Determining the Port Sparing Tools - EMC Work Load Analyzer, Navisphere Analyzer, ControlCenter,
VisualSAN/SRM, and Native switch managers.